The specimens were prepared from vacuum-melted alloys, of high purity vacuum-melted copper and electrolytic chromium. The liquidus and eutectic point were determind by thermal analysis. The eutectic temperature is 1074.8° and its composition is 1.28 wt% of chromium. The determination of solid solubbility of chromium in copper was made by microscopic observation and electrical resistivity measurement. The solubility of chromium in solid copper is 0.6 wt% at 1050°, 0.4 wt% at 1000°, 0.25 wt% at 950°, 0.17 wt% at 900°, and 0.10 wt% at 840°.
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